Apparatus for estimating rechargeable battery performance according to electrode structure and method thereof

Patent metadata

Field	Value
Publication number	US-12181530-B2
Application number	US-202117922762-A
Country	US
Kind code	B2
Filing date	Jul 27, 2021
Priority date	Sep 29, 2020
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

Discussed is an apparatus for estimating a rechargeable battery performance according to an electrode structure and a method thereof and the apparatus for estimating the rechargeable battery performance. The apparatus may include a communication unit that receives a cumulative intrusion value that is a summed value of volumes of entire pores per unit area of a positive electrode from an apparatus for measuring volumes of pores formed in the positive electrode, and a processor that estimates an output performance of a rechargeable battery by comparing the cumulative intrusion value and a volume reference value, wherein the volume reference value is the cumulative intrusion value corresponding to an expected output value required for the rechargeable battery when the rechargeable battery is continuously discharged.

First claim

The invention claimed is:

1. An apparatus for estimating a rechargeable battery performance, the apparatus comprising:
a communication unit that receives a cumulative intrusion value that is a summed value of volumes of entire pores per unit area of a positive electrode from an apparatus for measuring volumes of pores formed in the positive electrode; and
a processor that estimates an output performance of a rechargeable battery by comparing the cumulative intrusion value and a volume reference value,
wherein the volume reference value is a cumulative intrusion value corresponding to an expected output value required for the rechargeable battery when the rechargeable battery is continuously discharged.

2. The apparatus for estimating the rechargeable battery performance of claim 1 , wherein the pores have a diameter of 0.1 micrometer or more and 1 micrometer or less.

3. The apparatus for estimating the rechargeable battery performance of claim 2 , wherein the processor, when the cumulative intrusion value is equal to or greater than the volume reference value, determines that the rechargeable battery including the positive electrode satisfies the expected output value.

4. An apparatus for estimating a rechargeable battery performance, the apparatus comprising:
a communication unit that receives a cumulative intrusion value that is a summed value of volumes of entire pores per unit area of a negative electrode from an apparatus for measuring volumes of pores formed in the negative electrode; and
a processor that estimates charging performance of a rechargeable battery by comparing the cumulative intrusion value and a volume reference value,
wherein the volume reference value is the cumulative intrusion value corresponding to an expected state-of-charge (SOC) value required for the rechargeable battery at a charge end time when the rechargeable battery is continuously charged.

5. The apparatus for estimating the rechargeable battery performance of claim 4 , wherein the pores have a diameter of 0.1 micrometer or more and 1 micrometer or less.

6. The apparatus for estimating the rechargeable battery performance of claim 5 , wherein the processor, when the cumulative intrusion value is equal to or greater than the volume reference value, determines that the rechargeable battery including the negative electrode satisfies the expected SOC value.

7. A method for estimating a rechargeable battery performance, the method comprising:
receiving a cumulative intrusion value that is a summed value of volumes of entire pores per unit area of a positive electrode from an apparatus for measuring volumes of pores formed in the positive electrode;
comparing the cumulative intrusion value and a volume reference value; and
determining that a rechargeable battery including the positive electrode satisfies an expected output value when being continuously discharged when the cumulative intrusion value is equal to or greater than the volume reference value as a comparison result,
wherein the volume reference value is the cumulative intrusion value corresponding to a lowest value of the expected output value.

8. The method for estimating the rechargeable battery performance of claim 7 , wherein the pores have a diameter size of 0.1 micrometer or more and 1 micrometer or less.

9. A method for estimating a rechargeable battery performance, the method comprising:
receiving a cumulative intrusion value that is a summed value of volumes of entire pores per unit area of a negative electrode from an apparatus for measuring volumes of pores formed in the negative electrode;
comparing the cumulative intrusion value and a volume reference value; and
determining that a rechargeable battery including the negative electrode satisfies an expected state-of-charge (SOC) value at a charge end time when being continuously charged when the cumulative intrusion value is equal to or greater than the volume reference value as the as a comparison result,
wherein the volume reference value is the cumulative intrusion value corresponding to the expected SOC value.

10. The method for estimating the rechargeable battery performance of claim 9 , wherein the pores have a diameter size of 0.1 micrometer or more and 1 micrometer or less.

Assignees

• Lg Energy Solution Ltd

Inventors

• Park Ji Hye
• Joe Wontae

Classifications

• H01M10/48

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title

• H01M10/4285 Primary

  Testing apparatus · CPC title

• G01N15/08

  Investigating permeability, pore-volume, or surface area of porous materials · CPC title

• G01N15/088

  Investigating volume, surface area, size or distribution of pores; Porosimetry · CPC title

• G01R31/382 Primary

  Arrangements for monitoring battery or accumulator variables, e.g. SoC · CPC title